hi all . got to the dyno and found out why i had some issues previously , i have a weak crank sensor , we put a pitch anayliser on it and the resonation changed the sensitivity of it which meant it didnt read thed crank trigger wheel 100% at certain rev ranges , it wasnt a carb problem that i first was trying to fix, so i have ordered a more higher output senor , engine ran well and we re jetted the primarys to 65 jets from 72s , got bad weather here now so wont be back to the dyno till mid feb.